Chapter 18, Problem 18.66AP

Interpretation Introduction

(a)

Interpretation:

The oxidation state of iron in the protoporphyrin $\text{IX}$ group of cytothrome $\text{P450}$ is to be verified. The $d^n$ electron count of the metal is to be stated.

Concept introduction:

The oxidation state of the metal represents the tendency of the metal to lose electrons. More the tendency to donate electrons higher will be the oxidation state. The $d^n$ count is the number of electrons present in the $d$-orbital of the metal atom forming complex.

Interpretation Introduction

(b)

Interpretation:

The total electron count around the iron metal in the protoporphyrin $\text{IX}$ group of cytothrome $\text{P450}$ is to be stated.

Concept introduction:

The electron count of the metal is the number of electrons present in the bonding molecular orbital of the metal. The electrons donated by the ligand also contribute in the electron count.